Laserfiche WebLink
- Sage Creek Coal. Mining of the Sage Creek coal seam began in <br />September 2003. Well WSC24 was drilled in August 2001 in the II -W South <br />area. Only five samples were collected until this well failed due to a <br />landslide that occurred in April 2003. A replacement well, WSC25, was <br />drilled in September 2004. TDS values at this well display an increasing <br />trend. All values have been below 700 mg /l. <br />- Wolf Creek Overburden. Well WWCOV24 was drilled in August 2001 in <br />the II -W South area. Only five samples were collected until it .failed <br />due to a landslide that occurred in April 2003. Replacement well WWCOV25 <br />was drilled in September 2004. TDS values at this well display an <br />increasing trend. All values have been below 1400 mg /l. <br />- Wolf Creek Coal. Mining of the Wolf Creek coal seam began in October <br />2003. One well monitors the water quality in this coal seam in the II--W <br />South area. Well WWC24 was drilled in August 2001 in the II -W South <br />area. Only five samples were collected until this well failed due to a <br />landslide that occurred in April 2003. A replacement well, WWC25, was <br />drilled in September 2004. TDS values at this well display an increasing <br />trend, with the peaks occurring in 2008 and 2011. All values have been <br />below 800 mg /l. <br />- Wolf Creek Underburden. Well WWCU24 was drilled in August 2001 in the <br />II -W South area. Only five samples were collected until it failed due to <br />a landslide that occurred in April 2003. Replacement well WWCU25 was <br />drilled in September 2004. TDS values at this well display a decreasing <br />trend, with the peak occurring in 2007. All values have been below 1400 <br />mg /1. <br />Trout Creek Sandstone. Well WTC201 is used as the water supply well <br />for the mine facilities. It displays an increasing TDS trend; however, <br />the peak TDS value occurred in June 1999. It is unlikely that the TDS <br />increases observed at this well are due to mining impacts, since <br />confining layers of shale separated this aquifer from mined seams. All <br />values have been at or below 700 mg 11. <br />5 <br />